/*
 * Enano JWS - Javascript Windowing System
 * Sorry if I stole the name ;)
 * Copyright (C) 2006-2007 Dan Fuhry
 * Yes, it's part of Enano, so it's GPL
 */

	var position;
	position = getScrollOffset();
	
	var jws = {
		position : position,
		obj : null,
		startup : function() {
			jws.debug('jws.startup()');
			var divs = document.getElementsByTagName('div');
			if(IE) { position = document.body.scrollTop; }
			else   { position = window.pageYOffset; }
			for(i=0;i<divs.length;i++) {
				if(divs[i].id && divs[i].id.substr(0, 4) == 'root') {
					divs[i].onClick = 'jws.focus(\''+divs[i].id+'\')';
					var tb = i + 1
					tb = divs[tb];
					tb.innerHTML = '<table border="0" width="100%"><tr><td>' + tb.innerHTML + '</td><td align="right"><div align="center" class="closebtn" onclick="jws.closeWin(\''+divs[i].id+'\');">X</div></td></tr></table>';
					divs[i].style.width = '640px';
					divs[i].style.height = '480px';
					Drag.init(tb, divs[i]);
				}
			}
		},
		initWindow : function(o) {
			jws.debug('jws.initWindow('+o+' ['+o.id+'])');
			var divs = document.getElementsByTagName('div');
			for(i=0;i<divs.length;i++) {
				if(divs[i].id && divs[i].id == o.id) {
					var tb = i + 1
					tb = divs[tb];
					tb.innerHTML = '<table border="0" width="100%"><tr><td>' + tb.innerHTML + '</td><td align="right"><div class="closebtn" onclick="jws.closeWin(\''+divs[i].id+'\');"></div></td></tr></table>';
					divs[i].style.width = '640px';
					divs[i].style.height = '480px';
					Drag.init(tb, divs[i]);
				}
			}
		},
		closeWin : function(id) {
			jws.debug('jws.closeWin(\''+id+'\')');
			document.getElementById(id).style.display = 'none';
			enlighten();
		},
		openWin : function(id, x, y) {
			darken();
			var e = document.getElementById(id);
			if(!x) x = 640;
			if(!y) y = 480;
			jws.debug('jws.openWin(\''+id+'\', '+x+', '+y+')');
			e.style.display = 'block';
			e.style.width   = x+'px';
			e.style.height  = y+'px';
			
			var divs = document.getElementsByTagName('div');
			for(i=0;i<divs.length;i++) {
				if(divs[i].id && divs[i].id == e.id) {
					var cn = i + 3;
					cn = divs[cn];
					
					var h = getElementHeight(e.id) - 53;
					var w = getElementWidth(cn.id) - 20;
					cn.style.width   =  w + 'px';
					cn.style.height  =  h + 'px';
					cn.style.clip.top = 0 + 'px';
					cn.style.clip.left = 0 + 'px';
					cn.style.clip.right =  w + 'px';
					cn.style.clip.bottom = h + 'px';
					cn.style.overflow = 'auto';
				}
			}
			jws.setpos(id);
			jws.focus(id);
		},
		setpos : function(el) {
			jws.debug('jws.setpos(\''+el+'\')');
			el = document.getElementById(el);
			var w = getWidth();
			var h = getHeight();
			var ew = getElementWidth(el.id);
			var eh = getElementHeight(el.id);
			px = (w/2) - (ew/2);
			py = (h/2) - (eh/2);
			if (IE) { position = document.body.scrollTop; }
			else    { position = window.pageYOffset; }
			py=py+0;
			if ( IE )
				el.style.position = "absolute";
			else
				el.style.position = "fixed";
			el.style.left=px+'px';
			el.style.top =py+'px';
		},
		scrollHandler : function() {
			var divs = document.getElementsByTagName('div');
			for(i=0;i<divs.length;i++) {
				if(divs[i].id && divs[i].id.substr(0, 4) == 'root' && divs[i].style.display == 'block') {
					c = divs[i];
					jws.debug('jws.scrollHandler(): moving element: '+c.id);
					var t = c.style.top;
					var py = t.substr(0, t.length - 2);
					py = parseInt(py);
					if(jws.position) { py = py - jws.position; }
					position = getScrollOffset();
					py=py+position;                                                           
					c.style.position = "absolute";
					if(!isNaN(py)) c.style.top =py+'px';
					jws.debug('jws.scrollHandler(): value of py: '+py);
				}
			}
			jws.position = position;
		},
		focus : function(e) {
			e = document.getElementById(e);
			if(e.style.zindex) z = e.style.zindex;
			else z = 1;
			z=z+5;
			e.style.zIndex = z;
		},
		debug : function(t) {
			if(document.getElementById('jsw-debug-console')) {
				dbg = document.getElementById('jsw-debug-console');
				debugdata = dbg.innerHTML;
				dbg.innerHTML = debugdata+"<br />"+t;
			}
		}
	} // class jws

//window.onscroll=jws['scrollHandler'];

/**************************************************
 * dom-drag.js
 * 09.25.2001
 * www.youngpup.net
 * The original version of this code is in the
 * public domain. We have relicensed this modified
 * version under the GPL version 2 or later for
 * Enano.
 **************************************************/

var Drag = {

	obj : null,

	init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
	{
		o.onmousedown	= Drag.start;

		o.hmode			= bSwapHorzRef ? false : true ;
		o.vmode			= bSwapVertRef ? false : true ;

		o.root = oRoot && oRoot != null ? oRoot : o ;

		if (o.hmode  && isNaN(parseInt(o.root.style.left  ))) o.root.style.left   = "0px";
		if (o.vmode  && isNaN(parseInt(o.root.style.top   ))) o.root.style.top    = "0px";
		if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right  = "0px";
		if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";

		o.minX	= typeof minX != 'undefined' ? minX : null;
		o.minY	= typeof minY != 'undefined' ? minY : null;
		o.maxX	= typeof maxX != 'undefined' ? maxX : null;
		o.maxY	= typeof maxY != 'undefined' ? maxY : null;

		o.xMapper = fXMapper ? fXMapper : null;
		o.yMapper = fYMapper ? fYMapper : null;

		o.root.onDragStart	= new Function();
		o.root.onDragEnd	= new Function();
		o.root.onDrag		= new Function();
	},

	start : function(e)
	{
		var o = Drag.obj = this;
		e = Drag.fixE(e);
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		o.root.onDragStart(x, y);

		o.lastMouseX	= e.clientX;
		o.lastMouseY	= e.clientY;

		if (o.hmode) {
			if (o.minX != null)	o.minMouseX	= e.clientX - x + o.minX;
			if (o.maxX != null)	o.maxMouseX	= o.minMouseX + o.maxX - o.minX;
		} else {
			if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
			if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
		}

		if (o.vmode) {
			if (o.minY != null)	o.minMouseY	= e.clientY - y + o.minY;
			if (o.maxY != null)	o.maxMouseY	= o.minMouseY + o.maxY - o.minY;
		} else {
			if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
			if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
		}

		document.onmousemove	= Drag.drag;
		document.onmouseup		= Drag.end;

		return false;
	},

	drag : function(e)
	{
		e = Drag.fixE(e);
		var o = Drag.obj;

		var ey	= e.clientY;
		var ex	= e.clientX;
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		var nx, ny;

		if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
		if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
		if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
		if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);

		nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
		ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));

		if (o.xMapper)		nx = o.xMapper(y)
		else if (o.yMapper)	ny = o.yMapper(x)

		Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
		Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
		Drag.obj.lastMouseX	= ex;
		Drag.obj.lastMouseY	= ey;

		Drag.obj.root.onDrag(nx, ny);
		return false;
	},

	end : function()
	{
		document.onmousemove = getMouseXY;
		document.onmouseup   = null;
		Drag.obj.root.onDragEnd(	parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]), 
									parseInt(Drag.obj.root.style[Drag.obj.vmode ? "top" : "bottom"]));
		Drag.obj = null;
	},

	fixE : function(e)
	{
		if (typeof e == 'undefined') e = window.event;
		if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
		if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
		return e;
	}
};

